نتایج جستجو برای: β-naphthol

تعداد نتایج: 178938  

Journal: :Electrophoresis 2012
Caihong Zhou Shanshan Tong Yunxia Chang Qiong Jia Weihong Zhou

Ionic liquid (IL) based dispersive liquid-liquid microextraction (DLLME) with back-extraction coupled with capillary electrophoresis ultraviolet detection was developed to determine four phenolic compounds (bisphenol-A, β-naphthol, α-naphthol, 2, 4-dichlorophenol) in aqueous cosmetics. The developed method was used to preconcentrate and clean up the four phenolic compounds including two steps. ...

ژورنال: سلامت و محیط زیست 2012
ایجادپناه ساروی, حسین, خدادادی, احمد, گنجی دوست, حسین,

Background and Objectives: Many industrial effluent plants contain amounts of hard biodegradable compounds such as  β-naphthol which can be removed by conventional treatment systems. The objective of this research is to treat wastewater containing naphthalene by nano titanium oxide coated on activated carbon. Materials and Methods: Photocatalytic experiments were carried out for different conce...

Journal: :X-ray Structure Analysis Online 2021

The tetrabutylammonium chloride complex with rac-1,1′-bi-2-naphthol crystallizes in monoclinic space group P21/n, unit-cell parameters of; a = 10.4941(1)Å, b 26.3302(3)Å, c 11.5290(1)Å, α 90°, β 100.0154(5)°, γ 90 °, V 3137.05(5)Å3, and Z 4. packing mode, hydrogen bonding network, crystal data suggest that the structure is isomorphous reported of bromide rac-1,1′-bi-2-naphthol.2

Journal: :Oriental journal of chemistry 2022

A facile and eminent method has been reported for the preparation of amido alkyl naphthols. Amido naphthol derivatives were synthesized by condensation pyrazole aldehydes, β-naphthol acetamide in presence a heterogeneous SiO2 supported sodium hydrogen sulphate catalyst using acetic acid as solvent. This protocol is advantageous its shorter reaction hours, simplest workup technique, excellent yi...

Journal: :iranian journal of catalysis 2014
razieh ghashghaei soheila ghassamipour

a green and convenient méthode for the synthesis of  a variety of xanthene derivatives by condensation reaction between aldehydes and β-naphthol or dimedone in an micellar solution of sodium dodecylphosphonate is described. this method offers several advantages, such as using of a cheap and environmentally benign reaction media, low loadings of sodium dodecylphosphonate as catalyst and easy wor...

2013
Wei Lin Li Li Li Wang Qiu Yan Luo

To develop a new facile protocol for the synthesis of 2'-aminobenzothiazolo-arylmethyl-2-naphthol derivatives, N-bromosuccinimide (NBS) was used as an efficient catalyst for the one-pot synthesis of 2'-aminobenzothiazolo-arylmethyl-2-naphthols in excellent yields from β -naphthol (1 mmol), aromatic aldehydes (1 mmol), and 2-aminobenzothiazole (1 mmol) at 60°C under solvent-free conditions.

Journal: :iranian journal of catalysis 2012
jalal albadi nasir iravani moloud khoshakhlagh

poly(4-vinylpyridine)-supported copper iodide nanoparticles is reported as a new, green and recyclable catalyst for the synthesis of aryl-14h-dibenzo [a-o] xanthenes under solvent-free conditions. this catalyst can be recovered by simple filtration and recycled up to 8 consecutive runs without any loss of their efficiency.

2011
Xiao-hua CAI Hui GUO Bing XIE

One-pot multicomponent condensation of β-naphthol, aromatic aldehydes, acetamide or urea in the presence of potassium hydrogen sulfate was carried out under solvent-free condition to afford amidoalkyl naphthols in 83%~96% yields.

Journal: :Chemical communications 2015
Huayu Zheng Lu Bai Jingjing Liu Jiang Nan Zhijun Zuo Liu Yang Yaoyu Wang Xinjun Luan

A microwave-assisted Pd(0)-catalyzed alkyne migratory insertion/β-naphthol dearomatization cascade process has been accomplished to access a variety of spirocyclic compounds bearing all-carbon quaternary stereogenic centers in high yields with excellent chemoselectivities.

Ali.R Kiasat Mina Cheraghchi, Rashid Badri

A new and efficient synthesis of benzoxanthene drivatives from the three-component condensation reaction ofaryl aldehydes and β-naphthol under solvent-free conditions in the presence of β-cyclodextrin sulfonic acid, as an efficient heterogeneous solid acid catalyst with excellent yields and short reaction time is presented

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